Fountain pen protector



Jan. 26, 1932. T. KovAcs FOUNTAIN PEN PROTECTOR Filed June 26, 1930 mags:

Jzzven/ar Theodor Kova'cJ Alia/ 712 Patented Jan. 26, 1932 PATENT OFFICE THEODOR KOVAGS, OF BERLIN, GERMANY FOUNTAIN PEN PROTECTOR Application filed June 26, 1930, Seriar No. 463,990, and in Germany July 4, 1929.

This invention relates to fountain pen protectors for pens of the kind in which the nib does not draw back into the holder, the protector being either ofthe type which is screwthreaded to screw on to the pen or of'the type which is adapted for use as a pen stand.

With pens of the kind described it has hitherto been possible only by the exercise of great care, when placing the cap on the pen or inserting the pen in the pen stand, to prevent the pen nib from catching on the shoulde'r provided for sealing the pen and consequently both the pen nib and the shoulder were liable to be damaged. in order to prevent injuries to the pen point upon such catching, often requirements, which should have been met for reasons of cleanliness, have been ignored. In some cases, the shoulder has been made conical to cause the pen nibto glide along it and although this reduces the liability of damage to the nib, it does not prevent damage to the shoulder.

The object of the invention is to eliminate any damage from contact of the pen nib with the shoulder without changing the proper flat form of said shoulder. This is done lirst by making the diagonal distance, from one side of the edge of the bore of the protector to the opposite side of the shoulder, equal to or longer than the diagonal distance from the point of the pen to the opposite side of the front edge of the screw-thread provided on the pen barrel to engage the screw-thread on the cap, and second, by making the internal longitudinal section of the protector of such shape and size, in relation to the transverse dimensions of the pen and nib, that by laying the outer edge of the neck of the pen and the front edge of the screw-thread against the wall of the bore of the protector, the pen point will pass the internal shoulder without touching it. This requires the distance from the axis of the protector to the nib point to be smaller than the inner radius of the shoulder, it the pen touches the inside of the protector at opposite sides with the outer edge of its neck and with the front edge of its screwthread, the nib point being at this time within the area. of the shoulder. The expression edge of the bore of the protector as used in the present case, means the outer edge of that part of the interior of the protector which really supports or guides the pen, and does not apply to the outer edge of a flared or coun-' tersunk portion which is sometimes provided '5 at the outer end of the protector, as in the case of pen stands, for guiding the pen into the protector.

In order that the invention maybe more clearly understood, reference is hereinafter 6 made to the accompanying diagrammatic drawings whereon Figure 1 illustrates a fountain pen stand according to the invention, in vertical section. c5

Fi 2 and 3 show the pen protector in ver tical section, removed from the pen stand base and with the pen indiiferent positions during insertion.

Fig. 4 similarly shows the pen protector 70 in vertical section, removed from the pen stand base, but with the pen fully in position in the protector.

The scale of Figs. 2-4 is distorted, the width scale being twice the length scale, in 7 order to accommodate the views better in the available space on the sheet.

Fig. 5 is a longitudinal section through a screw-on cap according to the invention.

Referring to Figs. 1 of the drawings, 3 so designates the protector, 4 its central bore, 5'

a countersunk enlargement of the bore, 7 a shoulder which seals the end of the pen, and

10 the wall of the central bore. 8 is the outer edge of the pen section or neck of the fountain 86 pen 11 and 9 is thescrew-threaded portion of the pen for receiving a screw-on cap.

Fig. 2 shows the outer edge 8 of the neck of the pen in contact with the wall 10 of the central bore with the pen point 12 just above 90 the shoulder 7.

In Fig. 3 the screw-thread 9 lies against the outer edge 6 of the central bore. The pen has in consequence turned about the edge 8 and the pen point 12 is thus deflected inwards to 95 such an extent that, on pushing the pen further into the protector, the pen point passes freely past the] shoulder 7. In Fig. 4 the fountain pen has reached the final position.

It will be seen from the drawings that, H 6

with the construction of the central bore shown in Figs. 1-4, the smooth part of the pen barrel 11 beyond the screw-thread does not touch the wall of the central bore, so that it does not become scratched.

As shown in Fig. 1 the protector 3, which is openat its lower .end, and has ascrewr threaded .iportion 17? at said end, is detachably. fixed in a recess 2 in the base 1 of a pen stand, which has corresponding threads 18, being screwed into the recess 22 in: the example. shown, so that ink dripping from the pen can collect in the recess 2. To cleanthe'prm tector 3 it is removed from the base 1, whereby the recess 2'becomes easily accessible.

Fig: 5--showsa. screw-oni cap according. to the invention for. a fountainepen in which I the'pen. nibcannot be .drawn baclminto theholder. Misthe body. ofvthe-cap,-15-the internal-sho-ulder, and. 16 the wall. of. the bore inthe-cap. V I

The -abovementioned advantagesare ob-- tained by my invention by making thet diagonal distance -X from'tli-e edge --'T(or to-61- (or- '19) equal-toor greater than thediagonal distance from the pen point to the screw-thread 9 and by makin-githe -bore at or .16) of thelproteoton to suit the various transverse dimensions of: the pen and'the niba From the above specification it is clear that; the invention comprises shaping ithe .end i of the fountain-penwin such=mannerwithrespect. to. the shape. ofthe corresponding cap .or' protector which is to receive same that upon in-.. sertingthe pen into said otheraneans itcwill be impossible for the point ,ofithe penrto comes 1 into-contact with the sealiirgsshoulden.thus

preventing injury to either the 3B11:POlT1ti on the shouldert While I have disclosedzth'espreferred emabodiments-of inyinvention, .itisa obvious th at: some or all of theaadvantages Ofitl1'8 i11.en' tion may. berobtained without adheringistrictr. ly to the identical :fofmsdisclosed :and :theree.

: fore; itnvilli be understood that my. invention :is to belimiteduonlyin accordancewitlt.

the accompanying claims. r

I clai1n 1;."II1! combination awith aapen having a screwTth-read .on its. pen section and an irretractable nib,..a. protector having -a :central 2 bore adaptedtozreceivesaid nib and-thepen A section oft said pen; a-ishoulder inuthis bore adapted to bear againstithe front edge ofthe pen .section,..the. idiagonal distance of the operative front edge of the protector fromthis shoulderbeingilonger than the-diagonal distance of the peirpoint fromthe fronted'ge of this screw-thread, the longitudinalsections ofthe protectorbeing such in size and shapeinrelationto the; transverse=dimensions of said-pen and said nibithatthe distance-frontthe axis of the protector to the: nib pointsmaller; than the inner radius ofthe shoulder; a :when the outer. edge of the pen section and the front edge of its screw-thread,- on its opposite side touch, the inner surface of the bore of the protector, the nib point being at this time within the opening in the shoulder.

2. In combination with a pen having a 7 screw-thread on its pen section and an irretractablemib, .aprotector having, a central bore'adapte'd to. receive; said nib;- and thepen section of said pen; a shoulder in this bore adapted to bear against the front edge of the neclo-o-f said pen;afemale thread in said bore adapted to be screwed on said screwthread on the neck of the pen, the diagonal distance of the. contacting frontedge of the protector from this shoulder being longer from .the front. edge .ofthis screwsthnead, the..- longi-tudinal. section: of. the-prote1ctor=abeing;

' such insize and shape in relation to thetrans verse; dimensions of said; pen and said mo 5 that the distance z from. the-Taxisof i the .pro- I teeter tor--the nib, ,poi-nt is-smaller than: the

inner. radius of;- the shoulder, .wlien-the, outer edge O fibllespell SGQtl0Il7=1l1l 15116'flfilltz edge of 7 its screw-threadonits. opposite sidetouch the inner. surface of thebore of. the protector, the;

: nibpoint; being-{at this time within the open- 3. In.-= combinationwith'; a pen. having. protecton engagingjportion .on.its: pen .scctionv and; an irretractable. nib; a .protector .havin a central-bore adaptedsto receive saidnib-an-d r.

. the penisection of saichpcn a shoulden in. this I I boreadapted; to bear against: the; front. edge. of. the pen section,. the. diagonal; distance 01313 theoperative front edgezof thep rotector from; this shoulder beingrlongerthan the diagzonalz; distance -.of thepempointifnom theafront edge of said protectonaengaging port-ion,itlielongi tudinal.sectionofthe protecton beingsuehsin: 5

size and shapcwin .relationto the .transverse;. dimensions. of: said; penand: saiduiibthat the distance: :fIOllTihB. axis of the protecton totthe-.nib pointzis smaller. than the inner-radius;

of: the shoulder-,.when the-outer edge of. the pen? section anda. the front edge 1 of said pro 'tectonengaging, portion, on its opposite side,

touch; the: inner: surface: 1 of. the bore of I the f protector, the nib. point: being atthis time withinztheopening inithe. shoulder.

In -:test1mony whereoftI: afiix mysignature;

THEODOR ovA-os; 

